Fixed bugs in asserts.

dlib/image_processing/object_detector.h

@@ -154,7 +154,7 @@ namespace dlib
     {
         // make sure requires clause is not broken
         DLIB_ASSERT(scanner_.get_num_detection_templates() > 0 &&
-                    w_.size() == scanner.get_num_dimensions() + 1, 
+                    w_.size() == scanner_.get_num_dimensions() + 1, 
             "\t object_detector::object_detector(scanner_,overlap_tester,w_)"
             << "\n\t Invalid inputs were given to this function "
             << "\n\t scanner_.get_num_detection_templates(): " << scanner_.get_num_detection_templates()

dlib/svm/cross_validate_object_detection_trainer.h

@@ -130,6 +130,8 @@ namespace dlib
             >
         struct array_subset_helper
         {
+            typedef typename array_type::mem_manager_type mem_manager_type;
+
             array_subset_helper (
                 const array_type& array_,
                 const std::vector<unsigned long>& idx_set_